If by technobreak artstyle you mean japanese games here is a list of
2d japanese games without combat.
If you are also looking for non-japanese 2D games check out
this other list.
You can take any of those searches and further filter it to just return games from a specific engine or more detailed filtering as you wish.
On a more direct recomendation, you could check out
acerola games because they usually have no combat. There are plenty of japanese devs with a nice body of work like technobreak, just check the first list I linked to find more.